This paper proposes a jamming technique which employs a self-powered secondary
jammer to interfere a wire-tapper, who eavesdrops communications between a self-powered …

In this paper, we investigate joint impacts of hardware impairments, imperfect channel state
information (CSI) and interference constraints at secondary users in an underlay decode …

This paper investigate and enhances the bandwidth efficiency in the underlay cognitive
cooperative network with a reactive relay selection under interference and power …

The definition of the bandwidth efficiency (BE) of cognitive cooperative network (CCN) is the
ratio between a number of the licensed slot (s) or sub-channel (s) used by the unlicensed …

This paper selects an unlicensed relay among available self‐powered relays to not only
remain but also secure information transmission from an unlicensed source to an unlicensed …

In this paper, an unlicensed relay is deployed to maintain wireless connection between an
unlicensed source and an unlicensed destination in spectrum sharing paradigm when …

We investigate cognitive radio networks where the unlicensed sender operates in the
overlay mode to relay the information of the licensed transmitter as well as send its …

This paper selects an unlicensed relay among available self-powered relays to not only
remain but also secure information transmission from an unlicensed source to an unlicensed …